ALONEFIRE SV18 12W 365nm UV Flashlight Powerful USB C Rechargeable Woods Lamp Black Light for Pet Urine Detection, Resin Curing, Minerals, Fishing,Scorpion, Bed Bug with UV Protective Glasses,Battery

I did not realize that no UV light or blacklight I've ever owned has not done what this light does (I did not know what I was missing out on). Most UV/blacklights put out 90% of their light as visible light (outside the UV range) and is actually not helpful unless your just looking for halloweed fun. Yes they all cause some general florescence on things which even blue light can do which is far outside UV. Most of those household lights called "blacklights" even in the old days, put out mostly purple light (above 400nm). Even a cheap UV LED flashlight I have from about 10 years ago puts out only maybe 10% UV and the rest is just purple. So most of that power is just wasted. This light with it's UV filter puts out well over 95% of its light OTF as UV. Which makes you see everything that just about any other non-filtered light won't show you. Or at least no where near as well. Its surprisingly a great quality build all around for the price with a ramp-up ramp-down dimming function too. Feels good in the hand and does not seem cheaply made at all. I will buy another because its such a good value. It shines far and is also usable UV at a far distance. Its the perfect size and power output for just about any task or hobby because it's small enough to be pocket portable . You really don't need anything bigger or brighter. It has a large lithium battery. It does not get too warm at full power either. I love that you can charge it via usb-c instead of needing to remove the battery.

Great product

Very bright, so bright that its like a handheld tanning bed. You can even feel the heat coming off the lens. Works as it should. The glasses also work well to protect your eyes.

Very powerful light, you'll see things you can't unsee 😳 Great seller, great product A+

Found this light to be a great option for going through a room and discovering where my cat has peed. The battery has never gone out on me so far so not sure how long it lasts but it has been getting the job done. The construction of the light itself is also very good and has that nice solid metal feel. My only complaints about the light would be the positioning of the on button (I can never find it when the lights are off) and it could be a little brighter so it could be used with the lights on. Overall, this one is worth the bit of extra money over one of the cheaper alternatives from Amazon that I tried previously.

After reading an article in The New York Times (The Glowing Secret that Mammals Have Been Hiding), I wanted a UV light. I researched UV lights and selected this one because it emits light that is a true UV wavelength, not the longer violet wavelength, and the battery does not have to be removed to be charged. I charged it up and waited until dark to explore my house - which I thought was relatively clean. I was not ready for what this revealed. That place where the cat puked on the carpet months ago, was highly visible - more cleaning required. The toilet, after 26 people descended on my house for Thanksgiving, was no longer clean. The areas that needed cleaning were not visible in daylight, but this light still identified them clearly even in daylight. The glass bottle that was found in the rafters of my over 100 year old house glowed green - which I found was due to uranium in the glass. My jewelry fluoresced in a variety of colors. It's been so much fun discovering what fluoresces and what elements cause the different colors. This is a great educational tool for the curious student. I would not recommend it for young children (less than 10 years old) because of the dangers the UV light poses to the eyes and skin, and the light gets hot after a few minutes. I don't know how long a battery charge lasts.

First off, I'll start with a SAFETY Warning: make sure everyone within range or in the same room of this UV light is wearing UV guard glasses, and I mean everyone! This light can ruin a person's eyes if proper precaution is not taken. And DO NOT look directly into the lens to see if its working. Now, I've had this thing for a while now and it works awesomely and will light up any bacteria you missed in your household cleaning regiment. It also works great for identifying florescent compounds in rocks and makes spider and scorpion eyes glow in the dark. They make a more powerful version of this light but I feel this one is plenty powerful enough. I would recommend purchasing better quality UV Glasses. This is a great buy.

Works great until you need to recharge the battery. The supplied USB-A to C doesn't recharge the included battery. So after several weeks of using the flashlight it's a dead paperweight. I have returned one and had the same thing happen again. I will never purchase from this company again.

Una lámpara UV profesional!